Engine won't fire

[Charlie28]

Getting fuel to the rail, although plugs seem dry.

Any idea's?

Cheers,

Charlie

[Charlie28]

Taken injectors out and the bottoms are dry. So there not firing. Any idea's?

[satyrs]

Keep injectors on fuel rail and turn the car over. While fuelrail is off the car. Watch if you see the spray off the injectors. If fuel and ignition works. Check compressions.

[Charlie28]

There's no spray at all

[daniel_g]

EFI fuse possibly

[Charlie28]

Fuel getting to rail though. So can't be EFI fuse?

[daniel_g]

I see haha never read it properly!

[Dan507]

Checked FPR? line on the right way ect.

[Charlie28]

Fuel is getting to the rail mate. Injectors are not firing but I don't know why

[akyakapotter]

Check your earth's mate

[Charlie28]

Already check buddy, cleaned them all up and still no luck

[Charlie28]

Injectors are getting no pulse. What would cause this?

I not long ago started another engine I had in the car briefly so I know injectors are not faulty nor is the ECU

[Glanza-Ben]

do the ecu blink test to see if theres any faults in it

[satyrs]

before spending loads of money chaning parts on gues. bring it to a garage and ask if the have a scope meter. test the signal that goes to the injectors. the will be switched to earth to open and the signal will look like the following

if there is no signal to the injectors check the resistance in the wires. so unlug from injector and ecu and measure. if the wires are oke your ecu is probblably toast.

good luck man.

cheers,

Wouter

[Charlie28]

I just can see it being anything major, everything worked fine a few months ago. Must be an electrical fault but unsure what's causing it

[maddox710]

The loom of the injectors earthed well Charlie? Mine didn't fire when with the bad earth that had think I used alternator bracket as ground point

[Charlie28]

The loom of the injectors earthed well Charlie? Mine didn't fire when with the bad earth that had think I used alternator bracket as ground point

It earths to the inlet though right? I cleaned up all the earth points but still no luck. Just don't understand why it was fine when i fitted the knackered forged engine and know its being funny!

[maddox710]

Of the top of my head I can't remember without looks I've got mine on the alternator bracket that's all I remember

[Charlie28]

This is where it earths on the inlet off the injector loom.

http://postimg.org/image/5agfe65nr/

Maybe i'll try move it to the alternator bracket.

Edited April 20, 2015 by Charlie28

[maddox710]

This is where it earths on the inlet off the injector loom.

http://postimg.org/image/5agfe65nr/

Maybe i'll try move it to the alternator bracket.

Yeah might be worth a try

[Charlie28]

I'll swap earth position this evening. But its earthed exactly the same as when the old engine was fitted.

Even if the timing was out, it wouldn't stop the injectors from firing would it?

[maddox710]

No your right, the next port of call I would do is check all plugs related to the injectors and follow it back to ecu make sure there are no breaks in the wiring somewhere. Even the fuses

[funny onion]

I would also be tracing the injector loom back to the ECU. It's easy to tug on a wire a little bit too hard when removing/fitting engines i suppose. check the fuses and plugs. I hate frustrating problems like this

[Charlie28]

I would also be tracing the injector loom back to the ECU. It's easy to tug on a wire a little bit too hard when removing/fitting engines i suppose. check the fuses and plugs. I hate frustrating problems like this

Yeah its a right pain in the bum!

I'll trace everything back next weekend and fingers crossed find the problem!

[Charlie28]

Checked the engine was earth correctly with a multimeter and it's fine. So that rules out a bad earth